To do: The season at Flower Fields in Carlsbad, Calif., usually runs from March through mid-May, open daily from 9 a.m. to 6 p.m. ($11 per adult; 1-760-431-0352; www.theflowerfields .com). Anza-Borrego Desert State Park in Borrego Springs has 600,000 acres, with desert plants usually blooming between January and March. For updates, call the wildflower hot line, 1-760-767-4684 (1-760-767-5311; www.parks.ca.gov).